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Appendix A <br /> LOGS OF BORINGS AND MONITORING WELL DETAILS <br /> Subsurface conditions were investigated by drilling six borings (P-1 <br /> through P-3 and G-1 through G-3) , ranging from 40-1/2 to 215 feet in <br /> depth at the locations shown on Drawing 1. Boring P-1 and P-2 were <br /> drilled with a truck-mounted, hollow-stem, continuous-flight auger. <br /> Borings G-1 and P-3 were drilled with air-rotary drilling equipment. <br /> Borings G-2 and G-3 were drilled with mud-rotary drilling equipment <br /> after the original air-rotary drilled borehole collapsed. Borings <br /> were logged in the field by an EMCON geologist. <br /> Exploratory Borings G-1 and G-2 were converted to monitoring wells to <br /> measure ground-water levels under the site and to collect samples for <br /> chemical analysis . Well construction details are presented with the <br /> logs (except for Well W-3) are included here for documentation purpos- <br /> es. <br /> To enable the determination of the permeability of the unsaturated <br /> zone lying immediately below anticipated excavation depths, Explora- <br /> tory Borings P-1, P-2, and P-3 were converted to permeameters. These <br /> were constructed essentially as dry monitoring wells. Construction <br /> details are included with the boring logs. <br /> Logs of the soils and other subsurface conditions encountered in the <br /> borings are presented on Plates A-1 through A-44. Logs for site <br /> borings by both EMCON and Kleinfelder are also attached. Soils <br /> (surface soils and subsurface sediments) were classified according to <br /> the Unified Soil Classification System. <br />